临汾市刘村镇污灌农田土壤重金属污染评价与分布特征  

Soil Heavy Metal Distribution Characteristics and Pollution Assessment of Wastewater Irrigation Farmland in LiuCun Towns of LinFen City,Shanxi Province

作　　者：董苗[1] 张永清[1] 

机构地区：[1]山西师范大学城市与环境科学学院,山西临汾041004

出　　处：《节水灌溉》2014年第12期40-44,共5页Water Saving Irrigation

基　　金："十一五"国家科技支撑计划重点项目(2008BADA4B01)

摘　　要：为研究临汾市刘村镇污灌农田土壤重金属的累积与分布特征,以山西省土壤背景值为标准,运用单因子污染指数法及综合污染指数法,评价了刘村镇土壤中7种重金属元素的污染现状,并在ArcGIS软件的支持下绘制土壤重金属空间分布图,研究土壤中重金属的空间分布特征。结果显示:由于影响因素不同,各重金属元素的空间分布特征均存在差异。研究区内土壤Ni的污染情况较严重,Cu、As、Mn、Pb、Cr、Zn的污染程度较低。从综合污染指数来看,研究区内农田土壤重金属综合污染指数处于轻度污染水平,建议当地应采取相应的措施,加强对污染的防治,避免对人体健康造成危害。In order to study the soil heavy metal distribution characteristics in LiuCun towns of LinFen city,Shanxi Province,the pollution status of 7kinds of heavy metal in surface soil is sampled and analyzed.On the basis of soil background values in Shanxi Province,the single factor pollution index method and comprehensive pollution index method are used to evaluate,and the spatial distribution of soil heavy metals is drawn under the support of ArcGIS software to study the spatial distribution characteristics of soil heavy metal.The results show that due to different affecting factors,the spatial distribution characteristic of heavy metal elements are different.In the soil of the study area,Ni pollution is more serious than Cu,As,Mn,Pb,Cr and Zn.From the view of comprehensive pollution index,heavy metal pollution in farmland soil shows light level in research area.It is proposed that appropriate measures should be adopted to strengthen the prevention and control of pollution in the region to avoid the harm to human health.

关 键 词：污染评价 土壤重金属 空间分布特征 污灌农田 

分 类 号：X53[环境科学与工程—环境工程]